# Lazyweb vs Transitions.dev: Features, Pricing and Evidence

Honest, cited comparison of Lazyweb and Transitions.dev for product teams and AI agents choosing a design research tool.

HTML: https://design.lazyweb.com/vs/transitions-dev
Markdown: https://design.lazyweb.com/vs/transitions-dev.md
Updated: September 2026

## Verdict

- Choose Lazyweb if you want an agent-first design research library with 281k+ real app screens, app trees, Design.md-style app files, and screen-version history. Human browsing and MCP setup are free; non-Pro reports are partial and Pro reports are full. [2](https://design.lazyweb.com/)
- Choose Transitions.dev if you need to implement a particular interface transition. [1](https://transitions.dev/)

## Side-by-side

| Criterion | Lazyweb | Transitions.dev |
| --- | --- | --- |
| Best for | Use Lazyweb when deciding which onboarding, trial or monetization change to test in your product. [2](https://design.lazyweb.com/) | Use Transitions.dev when you need to implement a particular interface transition. [1](https://transitions.dev/) |
| Pricing | Human browse and MCP setup are free. Pro is $39/month for the complete toolkit except competitive tracking. Team is $99/month for up to five seats and competitive tracking. [5](https://design.lazyweb.com/pricing) | Public examples and a Pro tier; the Pro price was not verified. [1](https://transitions.dev/) |
| Library depth | 281k+ real app screens across iOS apps and marketing pages. [2](https://design.lazyweb.com/) | Named motion patterns such as menu, modal, resize and loading transitions. [1](https://transitions.dev/) |
| Platform coverage | iOS apps and marketing pages today; web-app flows are not available yet. [2](https://design.lazyweb.com/) | Web interface motion. [1](https://transitions.dev/) |
| MCP / API | Agent-first MCP setup across Codex, Claude Code, Cursor, Antigravity, hosted Claude connector paths, and other agentic platforms. [4](https://www.lazyweb.com/mcp-install) | Copy examples or use the linked coding-agent skill. [1](https://transitions.dev/) |
| Agent readiness | Agents research flows and experiment patterns, then use your product context to develop and prioritize growth hypotheses. [4](https://www.lazyweb.com/mcp-install) | Copy examples or use the linked coding-agent skill. [1](https://transitions.dev/) |

## Inspect Lazyweb examples

- [ChatGPT model picker](https://design.lazyweb.com/flow/chatgpt/model-picker) — Two captured screens · January 2026
- [How ChatGPT separates current and legacy models](https://design.lazyweb.com/research/chatgpt-model-picker-progressive-disclosure)
- [Cal AI app tree](https://design.lazyweb.com/company/cal-ai/app-tree) — Full 45-frame August 2026 capture

## Try a task before choosing

- [Design a banking account overview](https://design.lazyweb.com/research/banking-home-balance-and-transaction-states) — Compare balance labels, actions and empty activity in two public captures.
- [Build a streak calendar](https://design.lazyweb.com/research/streak-calendar-and-recovery-patterns) — Historical goal and weekly states, with explicit recovery design questions.
- [Implement a billing selector](https://design.lazyweb.com/research/billing-toggle-experiment-kit) — Original experiment pairs and a reusable brief; observed UI, not measured lift.


## What Transitions.dev does well

- Interactive demonstrations make timing and movement inspectable.
- Narrow patterns can inform implementation without a large research task.

## Where Transitions.dev is limited

- Motion demos do not describe a complete customer journey.
- Some examples are labelled Pro.

## Where Lazyweb shines

- Free human browsing makes it easy to inspect references before choosing MCP access.
- Agent workflows can pull references, app trees, and structured design context instead of relying on generic taste.
- Screen-version history lets agents see how a real product's UI evolved over time, not just one snapshot.

## Where Lazyweb is limited

- Lazyweb does not yet have web-app flows; flows are mobile-first today.
- Human-facing advanced filters are thinner than some paid human-first libraries.
- The product is intentionally agentic-first, so purely manual browsing may feel less polished than specialist galleries.

## Review scope

This comparison uses the linked first-party documentation. It does not claim independently measured product quality or customer outcomes.

## Related comparisons

- [Lazyweb vs 60FPS](https://design.lazyweb.com/vs/60fps) · [markdown](https://design.lazyweb.com/vs/60fps.md)
- [Lazyweb vs Design Spells](https://design.lazyweb.com/vs/design-spells) · [markdown](https://design.lazyweb.com/vs/design-spells.md)
- [Lazyweb vs Mobbin](https://design.lazyweb.com/vs/mobbin) · [markdown](https://design.lazyweb.com/vs/mobbin.md)
- [Lazyweb vs Refero](https://design.lazyweb.com/vs/refero) · [markdown](https://design.lazyweb.com/vs/refero.md)

## Sources

Sources checked for this comparison. Follow the links to verify details and current availability.

1. [Transitions.dev library](https://transitions.dev/) — Official documentation · transitions.dev · Public demos, Pro labels and agent-skill entry point.
2. [Lazyweb](https://design.lazyweb.com/) — Lazyweb product page · design.lazyweb.com · Product growth toolkit built around real UI evidence, with free browsing and plan-dependent installed research reports.
3. [Lazyweb Research](https://design.lazyweb.com/research) — Lazyweb research page · design.lazyweb.com · Research reports built from real UI evidence and product patterns.
4. [Lazyweb MCP install](https://www.lazyweb.com/mcp-install) — Lazyweb setup page · lazyweb.com · Agentic setup path for Codex, Claude Code, Cursor, Antigravity, and other MCP clients.
5. [Lazyweb pricing](https://design.lazyweb.com/pricing) — Lazyweb pricing page · design.lazyweb.com · Pro and Team prices, trial terms and plan access.